1851836 has 12 divisors (see below), whose sum is σ = 3703728. Its totient is φ = 793632.

The previous prime is 1851821. The next prime is 1851841. The reversal of 1851836 is 6381581.

1851836 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33041 + ... + 33096.

It is an arithmetic number, because the mean of its divisors is an integer number (308644).

2^1851836 is an apocalyptic number.

It is an amenable number.

1851836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1851836 is a wasteful number, since it uses less digits than its factorization.

1851836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66148 (or 66146 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 1851836 is about 1360.8218105248. The cubic root of 1851836 is about 122.8006995614.

The spelling of 1851836 in words is "one million, eight hundred fifty-one thousand, eight hundred thirty-six".